Home / 4,781.56-7,171.74-1,318.52

Finding the Fourth Proportional to 4,781.56, 7,171.74 and 1,318.52

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Solution

The fourth proportional to 4,781.56, 7,171.74 and 1,318.52 is: 1,977.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,781.56 : 7,171.74 = 1,318.52 : x
  2. Step 2: Convert to fraction form
    4,781.56/7,171.74 = 1,318.52/x
  3. Step 3: Cross multiply
    4,781.56x = 7,171.74 × 1,318.52
  4. Step 4: Simplify right side
    4,781.56x = 9,456,082.62
  5. Step 5: Solve for x
    x = 9,456,082.62/4,781.56
  6. Step 6: Final answer
    x = 1,977.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.